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m=10kg
d=3,2g/cm3=3,2kg/dm3
v=m/d
v=10/3,2
v = 3,125dm3
3) Gęstość wody d=1g/cm3
a)
m=10kg
d=1g/cm3=1kg/dm3
v=m/d
v=10/1
v = 10dm3 = 10 litrów
TAK, zmieści się
b)
d=1g/cm3
v=250cm3
m=v*d
m=250*1
m = 250g